Residual current circuit breaker 63A, 30mA, 4-pole, type AC CDC463J

Residual Current Circuit Breaker – Safety and Protection in Your Installation

This four-pole residual current circuit breaker with a rated current of 63A and a tripping current of 30mA, type AC, is a key element ensuring safety in every electrical installation. It is designed to protect people from electric shock and to protect circuits from the effects of insulation damage and short circuits. Its versatility makes it ideal for both professional installers and demanding end-users.

Design Features and Functionality

The circuit breaker is characterized by DIN rail mounting, which facilitates its installation and integration with the existing distribution board. The rated voltage of 400V and the insulation voltage Ui of 500V guarantee reliable operation under standard network conditions. The short-circuit breaking capacity of 6kA provides effective protection in the event of short-circuit currents. Additionally, the circuit breaker has an optical contact position indicator and a residual current release, which facilitates fault diagnosis and quick identification of the cause of tripping.

• Type AC: Indicates that the circuit breaker reacts to sinusoidal alternating currents, which is typical for most household appliances.
• Four-pole (4P): Provides protection for all phase and neutral conductors, increasing the safety of the entire circuit.
• Rated current 63A: Allows connection of devices with high power consumption to the circuit breaker.
• Sensitivity 30mA: Ensures a quick response to small leakage currents, minimizing the risk of electric shock.
• Width 4 modules: Compact dimensions allow for efficient use of space in the distribution board.
• Short-circuit strength 6kA: Guarantees reliable operation in the event of a short circuit.

Application and Advantages

The CDC463J residual current circuit breaker is widely used in electrical installations in residential, commercial and industrial buildings. It is particularly recommended for protecting circuits powering:

• Electrical outlets
• Lighting
• Household appliances
• Electrical equipment in bathrooms and kitchens (required by standards)

Thanks to the use of innovative design solutions, such as vertical comb busbars and IP2x touch protection, the installation and operation of the circuit breaker are extremely simple and safe. Additional functions, such as the ability to connect additional accessories (release devices, auxiliary contacts), allow the circuit breaker to be adapted to individual user needs. High quality workmanship and compliance with applicable standards (including the BBJ-SEP safety mark) guarantee the reliability and long-term operation of the device. The ability to remove/replace the device from the power rails without having to unscrew neighboring devices (for the 10 kA version) further facilitates servicing the installation.